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我在這個鏈接上看到http://www.tannerhelland.com/4743/simple-algorithm-correcting-lens-distortion/一個算法來取消魚眼鏡頭畸變,我試圖用opencv在C++中實現它。當參數強度接近於零時,輸出圖像與輸入圖像完全相同,並且在較高值的情況下我得到了不好的結果。如果有人知道可能是什麼問題(在我的代碼或更一般的算法中),這將是非常有用的。 非常感謝。魚眼畸變校正
#include "opencv2\core\core.hpp"
#include "opencv2\highgui\highgui.hpp"
#include "opencv2\calib3d\calib3d.hpp"
#include <stdio.h>
#include <iostream>
#include <math.h>
using namespace std;
using namespace cv;
int main() {
cout << " Usage: display_image ImageToLoadAndDisplay" << endl;
Mat_<Vec3b> eiffel;
eiffel = imread("C:/Users/Administrator/Downloads/TestFisheye.jpg", CV_LOAD_IMAGE_COLOR); // Read the file
if (!eiffel.data) // Check for invalid input
{
cout << "Could not open or find the image" << endl;
return -1;
}
cout << "Input image depth: " << eiffel.depth() << endl;
namedWindow("Display window", WINDOW_AUTOSIZE);// Create a window for display.
imshow("Display window", eiffel); // Show our image inside it.
//waitKey(0); // Wait for a keystroke in the window
int halfWidth = eiffel.rows/2;
int halfHeight = eiffel.cols/2;
double strength = 0.0001;
double correctionRadius = sqrt(pow(eiffel.rows, 2) + pow(eiffel.cols, 2))/strength;
Mat_<Vec3b> dstImage = eiffel;
int newX, newY;
double distance;
double theta;
int sourceX;
int sourceY;
double r;
for (int i = 0; i < dstImage.rows; ++i)
{
for (int j = 0; j < dstImage.cols; j++)
{
newX = i - halfWidth;
newY = j - halfHeight;
distance = sqrt(pow(newX, 2) + pow(newY, 2));
r = distance/correctionRadius;
if (r == 0.0)
theta = 1;
else
theta = atan(r)/r;
sourceX = round(halfWidth + theta*newX);
sourceY = round(halfHeight + theta * newY);
dstImage(i, j)[0] = eiffel(sourceX, sourceY)[0];
dstImage(i, j)[1] = eiffel(sourceX, sourceY)[1];
dstImage(i, j)[2] = eiffel(sourceX, sourceY)[2];
}
}
namedWindow("Display window 2", WINDOW_AUTOSIZE);
imshow("Display window 2", dstImage); // Show our image inside it.
waitKey(0);
return 0;
}
PS:我目前正在處理鏈接中發佈的第一張圖片。
[This](http://marcodiiga.github.io/radial-lens-undistortion-filtering)也許會讓你感興趣 –